Displaying 3 results from an estimated 3 matches for "conc1".
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conc
2012 Nov 30
1
help on "stacking" matrices up
...TIME3 <-matrix(c((0*INTERVAL):(6*INTERVAL)))
TIME2 <-matrix(c((0*INTERVAL):(7*INTERVAL)))
TIME1 <-matrix(c((0*INTERVAL):(8*INTERVAL)))
CDURINF1 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*TIME1))
CAFTINF1 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*Tinf))*(exp(-0.088*(TIME1)))
CONC1 <-ifelse(TIME1<=Tinf,CDURINF1,CAFTINF1)
CDURINF2 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*TIME2))
CAFTINF2 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*Tinf))*(exp(-0.088*(TIME2)))
CONC2 <-ifelse(TIME2<=Tinf,CDURINF2,CAFTINF2)
CDURINF3 <-((Dose/Tinf)*(1/(0.088*76.9)))*(...
2007 Jun 04
0
nls problems
...ages but not core R like 'stats'.
#####################
##
## SLIGHT MODIFICATIONS TO CURRENT EXAMPLES
## THAT DON'T WORK (except with my modifications)
##
# Weighted Michaelis-Menten model
# with data = a list that can not be coerced to a data.frame
TreatIrreg <- with(Treated, list(conc1=conc[1], conc.1=conc[-1], rate=rate))
# Passing arguments using a list that can not be coerced to a data.frame
weighted.MM1 <- function(resp, conc1, conc.1, Vm, K){
conc <- c(conc1, conc.1)
resp <- TI$rate
#
pred <- (Vm * conc)/(K + conc)
(resp - pred) / sqrt(pred)
}
Pur.wt1 &l...
2013 Apr 15
2
regression with paired left-censored data
...ous commands in R:
rega = cenreg(Cen(conc, cens_ind) ~ Gp_ident))?
with all X and Y data stacked and using a group identifier to look at the differences
this doesn't take account of the paired data though.
I have also tried splitting the data and regessing one on the other
rega = cenreg(Cen(conc1, censind1) ~ Cen(conc2,censind2))
which doesn't work.
Does anyone know of a command that will work - or perhaps suggest another package that I could use?
I have also looked at multiple imputation packages but they all seem to impute data depending on other columns - whereas I would want to i...